"Given the circumstances of the past 18 months working through Tiger's scandal, a new coach and with it a major swing change and Tiger battling through injuries, I am very disappointed to end our very successful partnership at this time."

Woods did not name a replacement for Williams or say when he would return to competition from leg injuries.

Following last year's U.S. Open, Woods told reporters there was no tension between him and Williams, despite having made comments that were widely interpreted as critical. After the final round at Pebble Beach, Woods had said he had made three mental mistakes and gone against his instincts.

Woods hurt his knee and Achilles tendon during the U.S. Masters in April and has not played since he pulled out of the Players Championship in May after playing just nine holes.

He has not won a major since the 2008 U.S. Open nor any tournament worldwide since 2009 and his world ranking has fallen to number 20.

Woods has also been trying to rebuild his golf swing and his private life following the breakup of his marriage after he confessed to a string of affairs.